Wondershare PDF Editor Free Download has a great support for OCR technology which means you can edit scanned PDF files as well and retain their original looks. You can edit the text in a scanned object and can also add/remove images. You can also set a password on your PDF files so that no one else can access your work and can alter it illegally.
All in all Wondershare PDF Editor is a great tool that can be used for effective editing of PDF format files. You can download Adobe Acrobat Writer as well which is very popular for such PDF Editing and creation.